Well, for a country that thinks drowning children in washbasins is a proper form of "state-sanctioned population control", I wouldn't be surprised. As the story goes, the Chinese are the ones who told Mark O'Brien about TBMC programs in the first place. As for underground, There are too many accounts of underground networks and cities for it not to be true. After all, the Bible often speaks of those who are "under the Earth" and I don't think it means the dead.